831428972 has 12 divisors (see below), whose sum is σ = 1587273576. Its totient is φ = 377922240.

The previous prime is 831428971. The next prime is 831428981. The reversal of 831428972 is 279824138.

831428972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 18896113 = 831428972 / (8 + 3 + 1 + 4 + 2 + 8 + 9 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (831428971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9448013 + ... + 9448100.

It is an arithmetic number, because the mean of its divisors is an integer number (132272798).

Almost surely, 2^831428972 is an apocalyptic number.

It is an amenable number.

831428972 is a deficient number, since it is larger than the sum of its proper divisors (755844604).

831428972 is a wasteful number, since it uses less digits than its factorization.

831428972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18896128 (or 18896126 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 831428972 is about 28834.5100877403. The cubic root of 831428972 is about 940.3186530955.

The spelling of 831428972 in words is "eight hundred thirty-one million, four hundred twenty-eight thousand, nine hundred seventy-two".